Component is not accessible to keyboard users

[aarongustafson]

Describe the bug
As it is currently built, this component is not accessible to keyboard users. Controls cannot take focus, accessible names & roles are not managed, etc.

To Reproduce
Steps to reproduce the behavior:

1. Try to bring focus to the component using your keyboard
2. Try to interact with the component with a keyboard after opening it

Expected behavior
All buttons should be focusable and be interactive using both keyboard and mouse.

Package info (please complete the following information):

• 2.2.0